A juvenile Bonaparte's Gull had enough of a bully Ring-billed Gull's antics so it fled for a more peacful area...about 8 feet away! Some strategy...the RBG was right back at it!
Canon 7D + 100-400L @400mm, manual exposure, evaluative metering, 1/1000s., f/7.1, ISO 800 (histogram checked), natural light, handheld, clipped the wings so I cropped tighter top, left and right (still about 75% FF).